Powershell script that apply resharper recommendations and exclude certain files and folders from windows defender.

ResharperExclude.ps1

[Collections.ArrayList]$vsFolders = @()
[Collections.ArrayList]$excludedFolders = @("$env:LOCALAPPDATA\JetBrains\Transient")
[Collections.ArrayList]$excludedFiles = @()

$vsVersions = @('2017', '2018', '2019')

Function Invoke-AsAdmin()
{
  if (!([Security.Principal.WindowsPrincipal][Security.Principal.WindowsIdentity]::GetCurrent()).IsInRole([Security.Principal.WindowsBuiltInRole] 'Administrator')) 
  {
    Start-Process -FilePath powershell.exe -ArgumentList ("-NoProfile -ExecutionPolicy Bypass -File `"{0}`"" -f $PSCommandPath) -Verb RunAs
    exit
  }
}


Function Find-VS
{
  param
  (
    [Parameter(Mandatory = $true)]
    $InstalledSoftware
  )
  $location = 'InstallLocation'
  foreach($obj in $InstalledSoftware)
  {
    $softwareName = $obj.GetValue('DisplayName')

    foreach($version in $vsVersions)
    {
      $target = 'Visual Studio Community {0}' -f $version
      if($target -eq $softwareName)
      {
        $null = $excludedFolders.Add($obj.GetValue($location))
        $null = $vsFolders.Add($obj.GetValue($location))
      }
    }
  }
}

Function Find-Processes()
{
  foreach($path in $vsFolders)
  {
    $file = Get-ChildItem -Path $path -Filter msbuild.exe -Include *.exe -Recurse -ErrorAction SilentlyContinue -Force
    $null = $excludedFiles.Add($file)
    $file = Get-ChildItem -Path $path -Filter devenv.exe -Include *.exe -Recurse -ErrorAction SilentlyContinue -Force
    $null = $excludedFiles.Add($file)
  }
}

Function Select-FOlderDialog

{
  [CmdletBinding()]
  param
  (
    [string]
    $initialDirectory = 'desktop'
  )

  $null = Add-Type -AssemblyName System.Windows.Forms
  $folderDialog = New-Object -TypeName System.Windows.Forms.FolderBrowserDialog
  $folderDialog.Description = 'Select a folder/project to exclude from windows defender!'
  $folderDialog.rootfolder = 'MyComputer'
  $folderDialog.SelectedPath = $initialDirectory

  $result = $folderDialog.ShowDialog((New-Object -TypeName System.Windows.Forms.Form -Property @{
        TopMost  = $true
        TopLevel = $true
  }))

  if($result -eq 'OK')
  {
    $folder += $folderDialog.SelectedPath
  }
  return $folder
}

Function Add-Folders()
{
  $newFolder = Select-FOlderDialog
  if($newFolder -eq $null)
  {
    return
  }
  
  $null = $excludedFolders.Add($newFolder)
  $result = Read-Host -Prompt 'add another folder ? (y/n)'
  if($result -eq 'y')
  {
    Select-FOlderDialog
  }
}

Function Set-Exclusions()
{
  Write-Output -InputObject 'exclude from windows defender'
  foreach($folder in $excludedFolders)
  {
    Add-MpPreference -ExclusionPath $folder
    Write-Output -InputObject $folder
  }

  foreach($file in $excludedFiles)
  {
    Add-MpPreference -ExclusionProcess $file
    Write-Output -InputObject $file | Select-Object -Property Name -ExpandProperty Name
  }
}

Invoke-AsAdmin
Find-VS -InstalledSoftware (Get-ChildItem -Path 'HKLM:\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall')
Find-VS -InstalledSoftware (Get-ChildItem -Path 'HKLM:\Software\Microsoft\Windows\CurrentVersion\Uninstall')
Find-Processes
Write-Output 'Add folder to exclude.'
Add-Folders
Set-Exclusions